Zakra <= 4.2.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Post Meta REST API
| CVE | CVE-2026-4804 |
|---|---|
| CVSS | 6.4 (Medium) |
| Publicly Published | July 2, 2026 |
| Last Updated | July 3, 2026 |
| Researcher |
Osvaldo Noe Gonzalez Del Rio (Os)
- krei.dev | ogbuilders.io
|
Description
The Zakra theme for WordPress is vulnerable to Stored Cross-Site Scripting via post meta values in all versions up to, and including, 4.2.0. This is due to the theme registering three post meta fields (zakra_menu_item_color, zakra_menu_item_hover_color, and zakra_menu_item_active_color) with 'show_in_rest' => true and 'auth_callback' => '__return_true', but without any sanitize_callback parameter in the register_post_meta() calls. While the classic editor save path applies sanitize_hex_color() sanitization, the REST API path completely bypasses this protection. The unsanitized meta values are then retrieved via get_post_meta() and concatenated directly into CSS strings that are output through wp_add_inline_style() without any escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses the injected page.
Learn more about Cross-Site Scripting vulnerabilities and how to prevent them.
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Vulnerability Details for Zakra
| Software Type | Theme |
|---|---|
| Software Slug | zakra (view on wordpress.org) |
| Patched? | Yes |
| Remediation | Update to version 4.2.1, or a newer patched version |
| Affected Version |
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| Patched Version |
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Recent vulnerabilities in Zakra
| # | Title | CVE ID | CVSS | Researchers | Date |
|---|---|---|---|---|---|
| 1 | Zakra <= 4.1.5 - Missing Authorization to Subscriber+ Demo Import | CVE-2025-8595 | Dmitrii Ignatyev | August 5, 2025 |
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